<template>
  <el-container class="home-container">
    <el-header>
      <div>
        <span>后台管理系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <el-container>
      <el-aside :width="isCollapse? '64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">
            <i class="el-icon-more-outline"></i>
        </div>
        <el-menu
          background-color="#313743"
          text-color="#fff"
          active-text-color="#349aff"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          :router="true"
          :default-active="activePath"
        >
          <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id">
            <template slot="title">
              <i :class="iconsObj[item.id]"></i>
              <span>{{item.authName}}</span>
            </template>
            <el-menu-item :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id" @click="saveNavState('/'+subItem.path)">
              <template slot="title">
                <i class="el-icon-menu"></i>
                <span>{{subItem.authName}}</span>
              </template>
            </el-menu-item>
          </el-submenu>
        </el-menu>
      </el-aside>
      <el-main>
          <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>
<script>
export default {
  data () {
    return {
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      isCollapse: false,
      activePath: ''
    }
  },
  created () {
    this.getMenuList()
    this.activePath = window.sessionStorage.getItem('activePath')
  },
  methods: {
    logout () {
      window.sessionStorage.clear()
      this.$router.push('/login')
    },
    async getMenuList () {
      const { data: res } = await this.$http.get('menus')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.menulist = res.data
    },
    toggleCollapse () {
      this.isCollapse = !this.isCollapse
    },
    saveNavState (activePath) {
      window.sessionStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>
<style lang="less" scoped>
.el-menu {
  border-right: 0;
}
.el-header {
  background-color: #193549;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
    img {
      height: 100%;
      width: 50px;
    }
  }
}
.el-aside {
  background-color: #313743;
}
.el-main {
  background-color: #e9edf1;
}
.home-container {
  height: 100%;
}
.iconfont{
    margin-right:10px;
}
.toggle-button{
    background-color: #4b5058;
    font-size: 10px;
    line-height: 24px;
    text-align: center;
    color:#fff;
    cursor: pointer;
}
</style>
